Indwelling needle assembly with built-in lighting optical fiber

Abstract

An indwelling needle assembly with built-in lighting optical fiber includes an indwelling hose, an optical fiber layer, a handheld part, a light source interface and a connector column; a puncture endoscope is inserted into the front end of the indwelling hose; the handheld part is a hollow shell, and through holes are opened on the end walls at both ends of the hollow shell, the end wall at the front end of the hollow shell is fixedly connected to the end wall at the rear end of the sleeve, the front end of the sleeve is sleeved on the outer wall of the indwelling hose and communicates with the through hole opened on the end wall at the front end of the hollow shell, and the front end of the indwelling hose extends out of the sleeve. Combined with other structures, it effectively avoids the defects of the prior art that the indwelling needle has a certain failure rate and affects clinical application, repeated punctures will cause the top of the indwelling needle to split and produce burrs that affect use, the replacement of arterial puncture needles increases costs, and it is difficult to find a vein, making accurate puncture more difficult.

Description

Technical Field

[0001] The invention belongs to the technical field of indwelling needles, and in particular relates to an indwelling needle assembly with a built-in lighting optical fiber. Background Art

[0002] The indwelling needle assembly is also called the cannula needle assembly. The core components include a soft catheter / cannula that can be indwelled in the blood vessel as an indwelling needle, and a stainless steel puncture guide needle core as a steel needle. When in use, the catheter and the needle core are punctured into the blood vessel together. When the catheter is completely in the blood vessel, the needle core is withdrawn, and only the soft catheter is indwelled in the blood vessel for infusion therapy. At present, indwelling needles are widely used in clinical arterial pressure measurement, deep vein catheterization, and venous catheterization. The indwelling needle catheterization operation is mainly based on the doctor's experience to touch the artery and vein and then blindly puncture. The blood return situation in the reserved observation window is used to determine whether the blood vessel is inserted. After confirmation, the steel needle is withdrawn and the indwelling needle is retained in the body.

[0003] Currently, arterial, venous, and other indwelling needles have the following disadvantages:

[0004] 1. There is a certain failure rate, which affects clinical application.

[0005] 2. Due to the high arterial pressure, thick arterial wall and thin lumen, once the first puncture and catheterization fails, hematoma and arterial spasm will occur at the puncture site, making it difficult to puncture and catheterize again. In severe cases, hematoma will form and the pulsation cannot be felt. Multiple punctures at the same site will cause ischemia of the distal palm, and repeated punctures will cause the tip of the indwelling needle to split and produce burrs, affecting its use. Replacing the arterial puncture needle increases the cost.

[0006] 3. It is difficult to find a vein for deep venous catheterization, and accurate puncture is also difficult. Summary of the invention

[0007] In order to solve the above problems, the present invention provides an indwelling needle assembly with its own lighting optical fiber, which effectively avoids the defects of the prior art that the indwelling needle has a certain failure rate affecting clinical application, repeated puncture will cause the tip of the indwelling needle to split and produce burrs affecting use, replacement of arterial puncture needles increases costs, and it is difficult to find a vein, making accurate puncture difficult.

[0008] In order to overcome the deficiencies in the prior art, the present invention provides a solution of an indwelling needle assembly with a built-in illumination optical fiber, which is as follows:

[0009] An indwelling needle assembly with a built-in lighting optical fiber, comprising an indwelling hose 1, an optical fiber layer 2, a handheld portion 3, a light source interface 4 and a connector column 5;

[0010] A puncture endoscope is inserted into the front end of the indwelling hose 1. The puncture endoscope is inserted from the connector post to the front end of the indwelling hose 1 to observe the puncture site and ensure that the puncture is accurately positioned at the blood vessel.

[0011] The hand-held part 3 is a hollow shell, and through-holes are opened on the end walls at both ends of the hollow shell. The end wall at the front end of the hollow shell is fixedly connected to the end wall at the rear end of the sleeve 6. The front end of the sleeve 6 is sleeved on the outer wall of the indwelling hose 1 and communicates with the through-hole opened on the end wall at the front end of the hollow shell. The front end of the indwelling hose 1 extends out of the sleeve 6.

[0012] One end of the light source interface 4 extends into the hollow shell, and the other end of the light source interface 4 is outside the hollow shell, and this end of the light source interface 4 is used to connect with the light source;

[0013] The connector column 5 is a ring column structure, the front end wall of the connector column 5 is fixedly connected to the rear end wall of the hollow shell, and the front end of the connector column 5 is connected to the through hole on the rear end wall of the hollow shell;

[0014] The front end of the optical fiber layer 2 extends into the retention hose 1 and directly reaches the front end of the retention hose 1, and the rear end of the optical fiber layer 2 extends into the hollow shell through a through hole opened on the end wall of the front end of the hollow shell, and the rear end of the optical fiber layer 2 is also connected to the end of the light source interface 4 that extends into the hollow shell.

[0015] Furthermore, a fin-shaped fixing wing 7 is fixedly connected to the bottom wall of the hand-held portion 3 .

[0016] Furthermore, the indwelling hose 1 comprises a cortex 11, an optical fiber layer 2 and an inner wall 12 from the outside to the inside. The cortex 11 and the inner wall 12 are made of reinforced polyurethane or hydrogel made of PUR material. The optical fiber layer 2 is a fiber ring composed of a plurality of single optical fibers.

[0017] Furthermore, the inner wall of the indwelling hose 1 is coated with a metal coating.

[0018] Furthermore, the optical fiber layer 2 is a polymer optical fiber or a glass fiber optical fiber, and its refractive index is greater than that of the indwelling hose 1.

[0019] Furthermore, the structure in which one end of the light source interface 4 extends into the hollow shell is:

[0020] A through opening is formed on the top wall of the hollow shell, and the end of the light source interface 4 extends into the hollow shell through the through opening in a transition fit manner.

[0021] Furthermore, the indwelling needle assembly with its own lighting optical fiber further comprises a Luer connector 8, which is connected to one end of a hose 9, a damping plug 10 is plugged at the rear end of the connector column 5, and the other end of the hose 9 is connected to the section of the connector column 5 between the damping plug 10 and the handheld portion 3. The Luer connector 8 is used to connect an external infusion tube.

[0022] The beneficial effects of the present invention are:

[0023] 1. A new indwelling hose is designed by combining an optical fiber layer with a polyurethane indwelling hose.

[0024] 2. The indwelling needle assembly with built-in lighting optical fiber combines the functions of indwelling needle and lighting;

[0025] 3. The glass optical fiber layer has good biocompatibility and safety.

[0026] 4. The built-in optical fiber layer enhances the toughness of the indwelling hose to a certain extent, and prevents the hose from burring and curling during the puncture process.

[0027] 5. The indwelling hose is used in conjunction with a puncture endoscope, which greatly improves the accuracy and efficiency of puncture.

[0028] 6. Using visible light imaging, organs and tissues are visible to the naked eye and can be distinguished intuitively and clearly. It is suitable for arterial catheterization, venous catheterization, deep venous catheterization, other tissues and organs, and many other situations where indwelling needles are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall structural diagram of the indwelling needle assembly with built-in lighting optical fiber of the present invention.

[0030] Figure 2 It is a structural diagram of the indwelling hose of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] In order to reduce the disadvantages, the present invention designs an indwelling needle assembly with a built-in lighting optical fiber.

[0033] like Figure 1-Figure 2As shown, an indwelling needle assembly with a built-in lighting optical fiber comprises an indwelling hose 1, an optical fiber layer 2, a handheld part 3, a light source interface 4 and a connector post 5; a puncture endoscope is inserted into the front end of the indwelling hose 1, and the puncture endoscope is inserted from the connector post to the front end of the indwelling hose 1 for observing the puncture site to ensure that the puncture is accurately positioned in the blood vessel; the handheld part 3 is a hollow shell, and through openings are opened on the end walls at both ends of the hollow shell, and the end wall of the front end of the hollow shell is fixedly connected to the end wall of the rear end of the annular columnar sleeve 6 by welding or bonding with an adhesive, and the front end of the sleeve 6 is sleeved on the outer wall of the indwelling hose 1 in a transition fit manner and communicated with the through opening opened on the end wall of the front end of the hollow shell, and the front end of the indwelling hose 1 extends out of the sleeve 6; the light source interface 4 extends into the hollow shell, and the other end of the light source interface 4 is outside the hollow shell, and this end of the light source interface 4 is used to connect with the light source to conduct the light beam of the light source; the connector column 5 is a ring-shaped columnar structure, and the end wall of the front end of the connector column 5 is fixedly connected to the end wall of the rear end of the hollow shell by welding or adhesive bonding, and the front end of the connector column 5 is connected with the through-hole on the end wall of the rear end of the hollow shell; the front end of the optical fiber layer 2 extends into the retention hose 1 and directly reaches the front end of the retention hose 1, and the rear end of the optical fiber layer 2 extends into the hollow shell through the through-hole opened on the end wall of the front end of the hollow shell, and the rear end of the optical fiber layer 2 is also connected with the end of the light source interface 4 extending into the hollow shell. In this way, the front end of the optical fiber layer 2 is extended into the indwelling hose 1 and directly reaches the front end of the indwelling hose 1. The light source interface is connected to the illumination light source, so that the light beam emitted by the illumination light source can be guided through the light source interface and the optical fiber layer 2 to illuminate the front end of the indwelling hose 1 in turn, and then the illuminated puncture endoscope is used to observe the position of the blood vessel such as the artery or vein, and then the hand-held part is held, and the puncture endoscope at the front end of the indwelling hose 1 is accurately punctured into the blood vessel according to the position of the blood vessel, and the operator can accurately extend the indwelling hose 1 to the set indwelling position along the contour of the inner wall of the blood vessel according to the illuminated puncture endoscope. Then, the hand-held part is held and pulled outward to pull out the optical fiber layer puncture endoscope from the indwelling hose 1 in the blood vessel, and the indwelling hose can be easily retained in the blood vessel. The bottom wall of the hand-held part 3 is fixedly connected to the fin-shaped fixing wing 7 by welding or bonding with an adhesive. The fixing wing 7 can be conveniently used to fix the indwelling needle assembly with its own lighting optical fiber on an external device when it is needed. The indwelling hose 1 is composed of a cortex 11, an optical fiber layer 2 and an inner wall 12 from the outside to the inside. The cortex 11 and the inner wall 12 are made of reinforced polyurethane or hydrogel made of PUR material. The optical fiber layer 2 is a fiber ring composed of a plurality of single optical fibers.The inner wall of the indwelling hose 1 is coated with a metal coating, which is used to isolate stray light and avoid interfering with the clarity of the endoscope. The optical fiber layer 2 is a polymer optical fiber or a glass fiber optical fiber, and its refractive index is greater than that of the indwelling hose 1. The structure in which one end of the light source interface 4 extends into the hollow shell is as follows: a through hole is opened on the top wall of the hollow shell, and the end of the light source interface 4 extends into the hollow shell through the through hole in a transition fit manner. The indwelling needle assembly with its own lighting optical fiber also includes a Luer connector 8, which is connected to one end of the hose 9, and the rear end of the connector column 5 is plugged with a damping plug 10, and the other end of the hose 9 is connected to the section of the connector column 5 between the damping plug 10 and the handheld part 3. The Luer connector 8 is used to connect an external infusion tube. A positive pressure valve 13 is also provided on the hose. The positive pressure valve 13 can ensure that blood does not flow out, while the infusion from the outside can be infused.

[0034] The working principle of the present invention is as follows: the front end of the optical fiber layer 2 is extended into the indwelling hose 1 and directly reaches the front end of the indwelling hose 1, and the light source interface is connected to the illumination light source, so that the light beam emitted by the illumination light source can be guided through the light source interface and the optical fiber layer 2 in turn to illuminate the front end of the indwelling hose 1, and then the position of the blood vessel such as the artery or vein is observed through the illuminated puncture endoscope, and then the hand-held part is held, and the needle at the front end of the indwelling hose 1 is accurately punctured into the blood vessel according to the position of the blood vessel, and the operator can accurately extend the indwelling hose 1 to the set indwelling position along the contour of the inner wall of the blood vessel according to the inner wall of the blood vessel illuminated by the illuminated puncture endoscope, and then the hand-held part is held and pulled outward to pull out the puncture endoscope from the indwelling hose 1 in the blood vessel, and the indwelling hose can be easily retained in the blood vessel. In addition, during installation, the rear end of the optical fiber layer 2 extends into the hollow shell and connects with the connector column, and then the puncture endoscope is pushed into the front end of the optical fiber layer 2 by a push rod or a needle-shaped member through the connector column 5, and then the rear end of the optical fiber layer 2 is connected to the end of the light source interface 4 extending into the hollow shell by welding or gluing.

[0035] In summary, the indwelling needle assembly with its own lighting optical fiber adopts visible light imaging, and organs and tissues are visible to the naked eye, and can be distinguished intuitively and clearly. It is suitable for arterial catheterization, venous catheterization, deep venous catheterization, other tissues and organs, and many other situations where indwelling needles are needed; by using a puncture endoscope, puncture and catheterization can be achieved under naked eye observation, and the position of the front end of the indwelling hose and the position of the blood vessel can be observed in real time, thereby improving the accuracy of puncture. The optical fiber is built into the indwelling tube, and the endoscope lens is as far away from the center of the puncture needle as possible, which can eliminate the influence of halo, etc., make the puncture endoscope image clear, and improve the real-time and accuracy of needle tip positioning; compared with traditional indwelling needles, the invention has no obvious difference in appearance, size, biocompatibility, etc., has a simple design structure, and the required indwelling hose, optical fiber layer, puncture endoscope and other technologies are mature and easy to manufacture; the optical fiber layer is placed in the indwelling hose, which provides a convenient and practical indwelling needle tool for doctors, especially those with less clinical experience.

[0036] The present invention has been described above in an illustrative manner using embodiments. Those skilled in the art should understand that the present disclosure is not limited to the embodiments described above, and that various changes, modifications and substitutions may be made without departing from the scope of the present invention.

Claims

1. An indwelling needle assembly with a built-in illumination optical fiber, characterized in that: It includes an indwelling hose, an optical fiber layer, a hand-held part, a light source interface and a connector column; A puncture endoscope is inserted into the front end of the indwelling hose, and the puncture endoscope is inserted from the connector post to the front end of the indwelling hose to observe the puncture site and ensure that the puncture is accurately positioned at the blood vessel; The hand-held part is a hollow shell, and through-holes are opened on the end walls at both ends of the hollow shell. The end wall at the front end of the hollow shell is fixedly connected to the end wall at the rear end of the sleeve. The front end of the sleeve is sleeved on the outer wall of the indwelling hose and communicated with the through-hole opened on the end wall at the front end of the hollow shell. The front end of the indwelling hose extends out of the sleeve. One end of the light source interface extends into the hollow shell; The other end of the light source interface is outside the hollow shell, and the end of the light source interface outside the hollow shell is used to connect with the light source; The connector column is a ring column structure, the front end wall of the connector column is fixedly connected to the rear end wall of the hollow shell, and the front end of the connector column is connected to the through hole on the rear end wall of the hollow shell; The front end of the optical fiber layer extends into the indwelling hose and directly reaches the front end of the indwelling hose, and the rear end of the optical fiber layer extends into the hollow shell through the through-hole opened on the end wall of the front end of the hollow shell, and the rear end of the optical fiber layer is also connected with the end of the light source interface extending into the hollow shell; The indwelling hose is composed of a cortex, an optical fiber layer and an inner wall from the outside to the inside. The cortex and the inner wall are made of reinforced polyurethane or hydrogel made of PUR material. The optical fiber layer is a fiber ring composed of a plurality of single optical fibers.

2. The indwelling needle assembly with self-illuminating optical fiber according to claim 1, characterized in that: The bottom wall of the hand-held part is fixedly connected with a fin-shaped fixing wing.

3. The indwelling needle assembly with self-illuminating optical fiber according to claim 1, characterized in that: The inner wall of the indwelling hose is coated with a metal coating.

4. The indwelling needle assembly with self-illuminating optical fiber according to claim 1, characterized in that: The optical fiber layer is a polymer optical fiber or a glass fiber optical fiber, and its refractive index is greater than that of the indwelling hose.

5. The indwelling needle assembly with self-illuminating optical fiber according to claim 1, characterized in that: The structure in which one end of the light source interface extends into the hollow shell is: A through opening is formed on the top wall of the hollow shell, and the end of the light source interface extends into the hollow shell through the through opening in a transitional fit manner.

6. The indwelling needle assembly with self-illuminating optical fiber according to claim 1, characterized in that: The indwelling needle assembly with its own lighting optical fiber also includes a Luer connector, which is connected to one end of the hose. The rear end of the connector column is plugged with a damping plug. The other end of the hose is connected to the section of the connector column between the damping plug and the handheld part. The Luer connector is used for an external infusion tube.

Images